[Nottingham] Problems recording in stereo

Duncan John Fyfe djf at star.le.ac.uk
Tue Nov 20 15:03:13 GMT 2007

On Tue, 2007-11-20 at 09:11 +0000, Dan Robertson wrote:
> Hi
> I'm trying to record music from an analogue source via
> the line in jack and have been trying a variety of
> programs in Ubuntu (Sound Recorder, GLAME, Audacity)
> with no joy. I can record in mono fine, but I seem
> unable to record in stereo. It doesn't seem to be the
> connection because I can play through the soundcard in
> stereo. I used to be able to record in stereo OK when
> I used Windows - anyone know what's happening?

Can you tell us anything about the hardware ?
(lshw or lspci should give you some info).

Some on-motherboard sound chips have "interesting"
features (like single bit volume controls) and 
it will help if we can exclude this possibility first.

Assuming alsa be the back-end to the ubuntu sound
set up try "alsamixer" if available.  It can reveal 
features of your sound chip which are not available through

It is also worth trying something simple (avoiding plugins
etc) like:
arecord -f cd -t wav -d 60 soundtest.wav
to see what you get.

Have fun,

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